Australian spelling vs misdemeanour

Australian spelling and misdemeanour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
misdemeanour	Yes	No	No	No

Australian spelling (noun)	misdemeanour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a crime less serious than a felony